Anatomy of the Neuro-Muscular System

Question 1

Describe the CENTRAL NERVOUS SYSTEM

Answer 1

• Consists of the Brain & Spinal Chord
• Sends impulses called Action Potentials to a Motor Unit
• To stimulate a nerve cell

Question 2

Describe MOTOR UNITS

Answer 2

• Single nerve cells
• Innervates Skeletal Muscle
• Stimulates Muscle Fibres of the unit via signals from the Brain

Question 3

Describe MOTOR NEURONES

Answer 3

• Nerve Cells connected to an axon that connects to Skeletal Muscle
• To stimulate movement

Question 4

Describe AXONS

Answer 4

• Long slender fibre of a Motor Neurone
• Conducts electrical impulses away from nerve to Muscle Fibre

Question 5

Describe the NEUROMUSCULAR JUNCTION

Answer 5

• Site where the Axon of a Motor Neurone and Motor End Plate of Muscle fibre meet
• Separated by Synaptic Cleft